[6.0] Stabilize and bring back flaky tests (#13034)

[stacey-gammon]

• Stabalize tests and bring back flaky test

• Try to fix flaky map radius visualize test

• fix flaky tile map zoom test

• Try to fix flaky zoom test by avoiding zooming in and out with spy panel open

• Remove duplicate wrapped retry around find methods

The retry was moved internally, around a check for stale elements as
well, so this should no longer be neccessary.

backports #13034

[stacey-gammon]

jenkins, test this

[stacey-gammon]

Ah, the issue is that the remove inline awaits PR was not backported to 6.0, which causes the test subjects service to use the find service, and thus should have the extra stale element checks.

     └-: time changes
11:51:00.305        └-> preserved during navigation
11:51:00.305          └-> "before each" hook: global before each
11:51:00.310            │ debg  Kibana uiSettings are in elasticsearch and the server is reporting a green status
11:51:00.325          │ debg  ensureTimePickerIsOpen: true
11:51:00.325          │ debg  --Clicking Quick button
11:51:00.497          │ debg  click Visualize tab
11:51:00.497          │ debg  clickSelector(a[href*='visualize'])
11:51:00.603          │ debg  doesTestSubjectExist top-nav
11:51:00.673          │ debg  isGlobalLoadingIndicatorHidden
11:51:00.721          │ debg  findByCssSelector [data-test-subj="globalLoadingIndicator"].ng-hide
11:51:00.731          │ debg  click Dashboard tab
11:51:00.731          │ debg  clickSelector(a[href*='dashboard'])
11:51:00.823          │ debg  doesTestSubjectExist top-nav
11:51:00.841          │ debg  isGlobalLoadingIndicatorHidden
11:51:00.841          │ debg  findByCssSelector [data-test-subj="globalLoadingIndicator"].ng-hide
11:51:00.850          │ debg  in findTestSubject: [data-test-subj~="globalTimepickerRange"]
11:51:01.081          │ debg  Taking screenshot "/var/lib/jenkins/workspace/elastic+kibana+pull-request+multijob-selenium/test/functional/screenshots/failure/dashboard app dashboard time time changes preserved during navigation.png"
11:51:01.237        └- ✖ fail: "dashboard app dashboard time time changes preserved during navigation"
11:51:01.240        │        [GET http://localhost:9515/session/650d4e4cbe948a95484d6a00fc426f0e/element/0.008184438231167324-73/displayed] stale element reference: element is not attached to the page document
11:51:01.240        │         (Session info: chrome=59.0.3071.115)
11:51:01.240        │         (Driver info: chromedriver=2.29.461571 (